Cryogenics & Temperature Control in Bangladesh

Cryogenics & Temperature Control from Lake Shore and Carbolite Gero, supplied, installed and supported in Bangladesh by Vvon Technologies.

38 products from 2 manufacturers: Lake Shore, Carbolite Gero.

Products

• Model 325 Cryogenic Temperature Controller — Lake Shore: The Model 325 is a cryogenic temperature controller with two sensor inputs. It reads silicon and GaAlAs diodes, platinum and other resistance sensors and most thermocouple types, and operates down to 1.2 K. It is used to measure and control the temperature of cryostats and probe stations.
• Model 335 Cryogenic Temperature Controller — Lake Shore: The Model 335 is a cryogenic temperature controller with two sensor inputs that reads diodes, resistance sensors and thermocouples down to 300 mK. Its resistance ranges span 0 Ω to 100 kΩ with excitation from 1 mA down to 100 nA. It is used to measure and control cryostat temperature.
• Model 336 Cryogenic Temperature Controller — Lake Shore: The Model 336 is a cryogenic temperature controller with four sensor inputs and four PID controlled outputs, and it controls temperature down to 300 mK. It reads diode, RTD and thermocouple sensors, with scanner, thermocouple and capacitance option cards available for added inputs.
• Model 346 Cryogenic Temperature Controller — Lake Shore: The Model 346 is a cryogenic temperature controller with 10 sensor inputs in its base configuration, expandable to 26 inputs using option cards. It covers 300 mK to 1500 K and provides 400 W of total heater power. It is used to measure and control temperature across several zones at once.
• Model 350 Cryogenic Temperature Controller — Lake Shore: The Model 350 is a cryogenic temperature controller for very low temperature platforms, including helium-3 systems, and works down to 100 mK. Its resistance inputs cover 0 Ω to 300 kΩ with excitation currents down to 10 nA. It is used to measure and control cryostat temperature.
• Model 372 AC Resistance Bridge — Lake Shore: The Model 372 is an AC resistance bridge and cryogenic temperature controller. It measures and controls temperature below 100 mK, reading resistance thermometers with an AC excitation rather than a DC one. It is used on dilution refrigerators and other very low temperature research platforms.
• Model 211 Cryogenic Temperature Monitor — Lake Shore: The Model 211 is a single channel cryogenic temperature monitor that displays sensor temperature from 1.4 K to 800 K. It accepts silicon and GaAlAs diodes and platinum, carbon-glass and Cernox resistance sensors, with 24-bit measurement and a 5-digit LED display. It is used for temperature readout.
• Model 218 Cryogenic Temperature Monitor — Lake Shore: The Model 218 is a cryogenic temperature monitor with eight sensor inputs, arranged in two groups of four. It reads diode and RTD sensors down to 1.2 K and updates at up to 16 readings per second in total. It is used where several points in a cryogenic system must be monitored at once.
• Model 224 Cryogenic Temperature Monitor — Lake Shore: The Model 224 is a cryogenic temperature monitor with 12 sensor channels that measures temperature down to 300 mK. It reads silicon diodes and both positive and negative temperature coefficient resistance sensors, using 4-lead differential measurement with current reversal on RTDs.
• 240 Series Input Modules — Lake Shore: The 240 Series Input Modules read cryogenic temperature sensors and pass the measurement onto a distributed control network. They are intended for large scale installations that use PLC based control rather than a single benchtop instrument. They suit systems with many sensor points spread across a facility.
• Cryogen-Free Cryogenic Cold Trap Cryostats — Lake Shore: These cold traps use a mechanical closed-cycle cooler to adsorb noble gases, including helium, neon, argon, krypton and xenon. The cold surface is held below 9 K so gas is captured from a vacuum line without liquid cryogens. Three models cover different upper temperature limits.
• Cryogen-Free Exchange Gas Cryostats — Lake Shore: These cryostats cool the sample in exchange gas using a closed-cycle refrigerator, so no liquid cryogen is needed. Samples may be solid, liquid or powder, conductive or non-conductive, and are changed in under 10 minutes. A wide choice of feedthrough and window options is offered.
• Cryogen-Free Continuous Low Temp Cryostats — Lake Shore: The SHI-950-LT cryostats use a closed-cycle refrigerator to cool samples in exchange gas to 1.5 K without liquid cryogens. An optional helium-3 insert takes the base temperature to 300 mK, and the upper limit is 800 K. Optical and non-optical versions are available.
• Cryogen-Free Vibration-Isolated and UHV Cryostats — Lake Shore: The CCS-XG closed-cycle cryostats reach below 4 K with sample vibration held to 40 nm, avoiding the movement usually associated with cryogen-free cooling. The CCS-XG-UHV version is built for ultra-high vacuum work and can be baked at 200 °C with the cold head removed.
• Cryogen-Free Vacuum Cryostats — Lake Shore: These cryostats mount the sample in vacuum on a cold stage cooled by a closed-cycle refrigerator. Five models cover upper limits from 325 K to 800 K, including compact versions and optical variants. A wide range of electrical feedthrough and window options is offered.
• CCS-CP Large Sample Space Cryostats — Lake Shore: The CCS-CP cryostats are cryogen-free closed-cycle systems built around a large cold plate in vacuum, working from below 4 K to 300 K. The standard plate is 200 mm across, with 102 mm to 305 mm options. RF and DC feedthroughs, wiring and custom optical designs are available.
• SuperTran Series Continuous Flow Cryostats — Lake Shore: SuperTran Series continuous flow cryostats cool a sample in vacuum by drawing liquid helium or liquid nitrogen from a storage dewar through a transfer line. Cooldown to 5 K takes about 15 minutes and helium use is 0.6 L/h at 5 K. Models cover operation from 2 K up to 800 K.
• SuperTran-VP Continuous Flow Cryostats — Lake Shore: SuperTran-VP cryostats cool the sample by immersing it in a temperature-controlled flowing vapour drawn from a liquid helium or liquid nitrogen supply. Base temperature is below 2 K and helium use is 1.3 L/h at 5 K. The sample region is 38.1 mm across and the sample can be rotated.
• SuperVariTemp Cryostats — Lake Shore: SVT Series SuperVariTemp cryostats are helium-cooled reservoir cryostats in which the sample sits in flowing vapour inside a sample tube. They reach below 2 K and hold temperature to about +/-50 mK, and can also be run on liquid nitrogen. Optical and Mossbauer versions are available.
• VNF-100 Series Cryostats — Lake Shore: VNF-100 Series cryostats cool the sample in flowing nitrogen vapour, which suits liquids, powders and other samples that are hard to anchor thermally. They run from 65 K upwards, hold 1.2 L of liquid nitrogen and give 6 to 8 hours of working time per fill.
• VPF-100 Series Cryostats — Lake Shore: VPF-100 Series cryostats hold the sample in vacuum on a stage cooled by liquid nitrogen, and are rated for high temperature work, with the VPF-100-H reaching 800 K. Hold time at 77 K is 8 hours for the VPF-100. Optical access is available on both models.
• Infinite Helium — Lake Shore: Infinite Helium is an automated system that lets a liquid helium cryostat run cryogen-free by recycling the helium in a closed loop. It gives continuous cooling below 2.2 K without helium replenishment, with a continuous run time of six months. A low-vibration option is available.
• RGC Helium Recirculating Gas Coolers — Lake Shore: RGC recirculating gas coolers run a liquid helium cryostat cryogen-free by recycling helium gas through a cryocooler in a closed loop. Base temperature is below 4.3 K with ST-100 and ST-300 cryostats. The gas handling system and cryocooler are supplied as separate units.
• Recirculating Chillers — Lake Shore: Lake Shore recirculating chillers provide closed-loop cooling water for electromagnets, power supplies, cryocoolers and measurement systems. Models are matched to the heat load of the system they serve, from 2,500 W single-phase up to 15,000 W three-phase. 50 Hz versions are also listed.
• Cernox — Lake Shore: Cernox cryogenic temperature sensors are resistance thermometers offering high sensitivity, low magnetic field-induced errors and good long-term stability. Standard parts cover 0.10 K to 325 K and the HT version reaches 420 K. Typical accuracy is +/-5 mK at 4.2 K and +/-60 mK at 300 K.
• DT-670 Silicon Diodes — Lake Shore: DT-670 silicon diodes are cryogenic temperature sensors that give a voltage output which varies with temperature. They cover 1.4 K to 500 K in the SD, CU-HT and BR packages and 1.4 K to 420 K in the others, with typical accuracy of +/-12 mK at 4.2 K and +/-35 mK at 300 K.
• Germanium — Lake Shore: Germanium resistance temperature sensors are used for demanding low temperature measurement, where stability and reproducibility matter most. Three models cover from below 0.05 K to 100 K, with short-term reproducibility of +/-0.5 mK at 4.2 K and long-term drift of +/-1 mK per year.
• Platinum — Lake Shore: Platinum resistance thermometers follow the IEC 751 standard curve and serve as cryogenic temperature sensing and control elements. The PT-103 covers 14 K to 873 K and the PT-111 covers 14 K to 673 K, both at 1 mA recommended excitation. Short-term stability is +/-5 mK at 77 K.
• HR Series Sensors — Lake Shore: HR Series cryogenic temperature sensors are tested for durability and precision, which suits mission-critical work. They come in SD and CU packages with a choice of lead options, including Quad-Lead and Quad-Twist wire. Resistance and sensitivity data are published from 20 K to 300 K.
• Interchangeable Rox — Lake Shore: Interchangeable Rox sensors are ruthenium oxide thick-film resistors that adhere to a standard curve, so units can be swapped without individual calibration. RX-102A-AA and RX-202A-AA cover 0.05 K to 40 K and RX-103A-AA covers 1.4 K to 40 K. Typical accuracy at 4.2 K is +/-16 mK.
• Ultra-Low Temperature Rox — Lake Shore: Ultra-low temperature Rox sensors make precise measurements below 10 mK, which suits dilution refrigerator systems. The RX-102B-RS-0.01B covers 5 mK to 40 K with a resistance of 10 kilohms to 20 kilohms and typical accuracy of +/-1.2 mK at 5 mK. Mounting hardware is included.
• Capacitance — Lake Shore: Capacitance sensors suit cryogenic temperature control in magnetic fields because they show virtually no field dependence. The CS-501GR operates from 1.4 K to 290 K in a package 3.0 mm across and 8.5 mm long. Leads are phosphor bronze with epoxy strain relief at the sensor.
• Thermocouple Wire — Lake Shore: Lake Shore supplies Type E and Type K thermocouple wire for cryogenic use, where a small, low-mass sensing junction is needed over a wide span. Type E is rated from 3.15 K to 953 K and Type K from 3.15 K to 1543 K. Field-induced errors are published at 2.5 T, 8 T and 14 T.
• Temperature Probes — Lake Shore: Lake Shore cryogenic temperature probes seal a sensor inside a stainless steel stem so it can be used in a thermowell or in direct contact with a cryogen. Stems are 316 stainless steel in 1/4 in and 1/8 in sizes, up to 28 in long. Several cable and connector options are offered.
• 132 Temperature Controller — Carbolite Gero: A panel mounted controller used mainly as an over-temperature protection device. Fitted with its own separate thermocouple, it operates a contactor if the set temperature is exceeded, which suits unattended operation and valuable loads.
• EPC3016P1 Temperature Controller — Carbolite Gero: A programmable controller offering one program of 24 segments set as ramp, step or dwell, with Ethernet communication fitted as standard. Multiple PID terms can be activated on request for precise control across a wide temperature range.
• EPC3008P10 Temperature Controller — Carbolite Gero: A programmable controller that stores and retrieves ten programs of 24 segments, with a comprehensive information display. Ethernet communication is fitted as standard and gain scheduling can be activated on request.
• Two-stage pulse tube cryocooler (RP-062B, RP-082B) — Lake Shore: This two-stage pulse tube cryocooler reaches a base temperature below 3.0 K, which extends its range of use to low temperature, low vibration applications. Because the pulse tube cooler carries no internal moving parts, vibration levels are inherently low. Two models are published, the RP-062B rated at 0.5 W at 4.2 K and the RP-082B at 1.0 W at 4.2 K, and both are for vertical orientation only.

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